US5733326A
Expired / Lapsed
US
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Composite material endoprosthesis
Assignee: Cordis Corp
•
Filing: 1996-05-28
•
Granted: 1998-03-31
•
Expires: 2016-05-28
Abstract
Abstract An endoprosthesis includes a body structure formed of a biocompatible material, the body structure including a first material having an average atomic number greater than 24 and a second material that is different than the first material. The first material is present in an amount not greater than 9% by volume based on the combined volume of the first material and the second material. The body structure has a mass absorption coefficient effective to provide a ratio of an intensity of an incident X-ray to an intensity of a transmitted X-ray in a range of 1e -2 to 1e -4 .
Inventors
- 👤 Charles V. Tomonto
- 👤 Robert J. Cottone, Jr.
- 👤 John L. Barchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:55
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/02; A61L27/04; A61L27/50; A61L31/00; A61L31/02; A61L31/022; A61L31/024; A61L31/028; A61L31/14; A61L31/18; A61F; A61F2/00; A61F2/01; A61F2/82; A61F2240/00; A61F2240/001; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
116 words
An endoprosthesis including a body structure formed of a biocompatible material, said body structure including a first material having an average atomic number greater than 24 and a second material that is different than said first material, said first material being present in an amount not greater than 9% by volume based on a combined volume of said first material and said second material, wherein said body structure has a mass absorption coefficient effective to provide a ratio of an intensity of an incident X-ray to an intensity of a transmitted X-ray in a range of 1e -2 to 1e -4 and wherein the endoprosthesis has a tensile strength ranging from 80,000-140,000 pounds per square inch.
Claim 2
Dependent Claim
116 words
An endoprosthesis including a body structure formed of a biocompatible material, said body structure including a first material having an average atomic number greater than 24 and a second material that is different than said first material, said first material being present in an amount not greater than 9% by volume based on a combined volume of said first material and said second material, wherein said body structure has a mass absorption coefficient effective to provide a ratio of an intensity of an incident X-ray to an intensity of a transmitted X-ray in a range of 1e -2 to 1e -4 and wherein the endoprosthesis has a tensile strength ranging from 80,000-140,000 pounds per square inch.
Claim 3
Dependent Claim
19 words
The endoprosthesis of claim 1 the endoprosthesis having a hoop strength of at least 6 pounds per square inch.
Claim 4
Dependent Claim
48 words
The endoprosthesis of claim 1 wherein said body structure comprises an elongated central cylindrical core and an elongated outer tubular member disposed around the core, one of said first and second materials comprising the core and the other of said first and second materials comprising the tubular member.
Claim 5
Dependent Claim
41 words
The endoprosthesis of claim 1 wherein said body structure comprises at least one layer, a first layer of said body structure being comprised of said first material and a second layer of said body structure being comprised of said second material.
Claim 6
Dependent Claim
19 words
The endoprosthesis of claim 3 said first material comprising the core and said second material comprising the tubular member.
Claim 7
Dependent Claim
27 words
The endoprosthesis of claim 1 said first material being selected from the group consisting of gold, platinum, tantalum, iridium, tungsten, and alloys thereof, and any combination thereof.
Claim 8
Dependent Claim
12 words
The endoprosthesis of claim 1 said second material comprising a nonmagnetic material.
Claim 9
Dependent Claim
18 words
The endoprosthesis of claim 1 said second material comprising carbon, manganese, silicon, chromium, nickel, phosphorus, sulfur and iron.
Claim 10
Dependent Claim
12 words
The endoprosthesis of claim 1 said second material comprising a cobalt alloy.
Claim 11
Dependent Claim
31 words
The endoprosthesis of claim 9 said second material being selected from the group consisting of carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, iron, titanium, and cobalt, and any combination thereof.
Claim 12
Dependent Claim
18 words
The endoprosthesis of claim 5 the tubular member having an outer diameter ranging from 0.0020 to 0.0150 inches.
Claim 13
Dependent Claim
18 words
The endoprosthesis of claim 5 the tubular member having an outer diameter ranging from 0.0040 to 0.0100 inches.
Claim 14
Dependent Claim
18 words
The endoprosthesis of claim 5 the tubular member having an outer diameter ranging from 0.0050 to 0.0075 inches.
Claim 15
Dependent Claim
16 words
The endoprosthesis of claim 5 the core having a diameter ranging from 0.0005 to 0.0030 inches.
Claim 16
Dependent Claim
144 words
An endoprosthesis including a body structure formed of a biocompatible material, said body structure being in the form of a wire comprising a central cylindrical core and an outer sheath disposed around said core, said core including a first material having an average atomic number greater than 24 and said sheath including a second material that is different than said first material, said first material being present in an amount not greater than 9% by volume based on a combined volume of said first material and said second material, and wherein said body structure has a mass absorption coefficient effective to provide a ratio of an intensity of an incident X-ray to an intensity of a transmitted X-ray in a range of 1e -2 to 1e -4 and wherein the endoprosthesis has a tensile strength ranging from 80,000 to 140,000 pounds per square inch.
Claim 17
Dependent Claim
144 words
An endoprosthesis including a body structure formed of a biocompatible material, said body structure being in the form of a wire comprising a central cylindrical core and an outer sheath disposed around said core, said core including a first material having an average atomic number greater than 24 and said sheath including a second material that is different than said first material, said first material being present in an amount not greater than 9% by volume based on a combined volume of said first material and said second material, and wherein said body structure has a mass absorption coefficient effective to provide a ratio of an intensity of an incident X-ray to an intensity of a transmitted X-ray in a range of 1e -2 to 1e -4 and wherein the endoprosthesis has a tensile strength ranging from 80,000 to 140,000 pounds per square inch.
Claim 18
Dependent Claim
27 words
The endoprosthesis of claim 15 said first material being selected from the group consisting of gold, platinum, tantalum, iridium, tungsten, and alloys thereof, and any combination thereof.
Claim 19
Dependent Claim
12 words
The endoprosthesis of claim 15 said second material comprising a cobalt alloy.
Claim 20
Dependent Claim
18 words
The endoprosthesis of claim 15 the tubular member having an outer diameter ranging from 0.0020 to 0.0150 inches.
Claim 21
Dependent Claim
18 words
The endoprosthesis of claim 15 the tubular member having an outer diameter ranging from 0.0040 to 0.0100 inches.
Claim 22
Dependent Claim
18 words
The endoprosthesis of claim 15 the tubular member having an outer diameter ranging from 0.0050 to 0.0075 inches.
Claim 23
Dependent Claim
17 words
The endoprosthesis of claim 15 the core having an outer diameter ranging from 0.0005 to 0.0030 inches.
Claim 24
Dependent Claim
20 words
The endoprosthesis of claim 15 the endoprosthesis having a hoop strength of at least about 6 pounds per square inch.
Claim 25
Dependent Claim
103 words
An endoprosthesis including a body structure formed of a biocompatible material, said body structure including a first material having an average atomic number greater than 24 and a second material that is different than said first material, said first material being present in an amount not greater than 7% by volume based on a combined volume of said first material and said second material, and wherein said body structure has a mass absorption coefficient effective to provide a ratio of an intensity of an incident X-ray to an intensity of a transmitted X-ray in a range of 1e -2 to 1e -4 .
Claim 26
Dependent Claim
103 words
An endoprosthesis including a body structure formed of a biocompatible material, said body structure including a first material having an average atomic number greater than 24 and a second material that is different than said first material, said first material being present in an amount not greater than 7% by volume based on a combined volume of said first material and said second material, and wherein said body structure has a mass absorption coefficient effective to provide a ratio of an intensity of an incident X-ray to an intensity of a transmitted X-ray in a range of 1e -2 to 1e -4 .
Claim 27
Dependent Claim
47 words
The endoprosthesis of claim 23 said body structure comprising an elongated central cylindrical core and an elongated outer tubular member disposed around the core, one of said first and second materials comprising the core and the other of said first and second materials comprising the tubular member.
Claim 28
Dependent Claim
37 words
The endoprosthesis of claim 23 said body structure comprising at least one layer, one of said first and second materials comprising one said layer and the other of said first and second materials comprising another said layer.
Claim 29
Dependent Claim
19 words
The endoprosthesis of claim 24 said first material comprising the core and said second material comprising the tubular member.
Claim 30
Dependent Claim
31 words
The endoprosthesis of claim 23 said second material being selected from the group consisting of carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, iron, titanium, and cobalt, and any combination thereof.
Claim 31
Dependent Claim
18 words
The endoprosthesis of claim 23 the endoprosthesis having a tensile strength ranging from 80,000-140,000 pounds per square inch.
Claim 32
Dependent Claim
27 words
The endoprosthesis of claim 23 said first material being selected from the group consisting of gold, platinum, tantalum, iridium, tungsten, and alloys thereof, and any combination thereof.
Claim 33
Dependent Claim
105 words
An endoprosthesis including a body structure formed of a biocompatible material, said body structure including a first material having an average atomic number greater than 24 and a second material that is different than said first material and nonmagnetic, said first material being present in an amount not greater than 9% by volume based on a combined volume of said first material and said second material, and wherein said body structure has a mass absorption coefficient effective to provide a ratio of an intensity of an incident X-ray to an intensity of a transmitted X-ray in a range of 1e -2 to 1e -4 .
Claim 34
Dependent Claim
105 words
An endoprosthesis including a body structure formed of a biocompatible material, said body structure including a first material having an average atomic number greater than 24 and a second material that is different than said first material and nonmagnetic, said first material being present in an amount not greater than 9% by volume based on a combined volume of said first material and said second material, and wherein said body structure has a mass absorption coefficient effective to provide a ratio of an intensity of an incident X-ray to an intensity of a transmitted X-ray in a range of 1e -2 to 1e -4 .
Claim 35
Dependent Claim
47 words
The endoprosthesis of claim 30 said body structure comprising an elongated central cylindrical core and an elongated outer tubular member disposed around the core, one of said first and second materials comprising the core and the other of said first and second materials comprising the tubular member.
Claim 36
Dependent Claim
37 words
The endoprosthesis of claim 30 said body structure comprising at least one layer, one of said first and second materials comprising one said layer and the other of said first and second materials comprising another said layer.
Claim 37
Dependent Claim
19 words
The endoprosthesis of claim 31 said first material comprising the core and said second material comprising the tubular member.
Claim 38
Dependent Claim
31 words
The endoprosthesis of claim 30 said second material being selected from the group consisting of carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, iron, titanium, and cobalt, and any combination thereof.
Claim 39
Dependent Claim
18 words
The endoprosthesis of claim 30 the endoprosthesis having a tensile strength ranging from 80,000-140,000 pounds per square inch.
Claim 40
Dependent Claim
27 words
The endoprosthesis of claim 30 said first material being selected from the group consisting of gold, platinum, tantalum, iridium, tungsten, and alloys thereof, and any combination thereof.
Claim 41
Dependent Claim
31 words
The endoprosthesis of claim 15 said second material being selected from the group consisting of carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, iron, titanium, and cobalt, and any combination thereof.
Claim 42
Dependent Claim
37 words
The endoprosthesis of claim 4 wherein the endoprosthesis is configured and arranged as a tube having a wall comprising said first layer and said second layer, each layer of said body structure having a generally annular shape.
Claim 43
Dependent Claim
18 words
The endoprosthesis of claim 38 wherein a wall thickness of said tube ranges from 0.0020 to 0.0150 inches.
Claim 44
Dependent Claim
18 words
The endoprosthesis of claim 38 wherein a wall thickness of said tube ranges from 0.0040 to 0.0100 inches.
Claim 45
Dependent Claim
18 words
The endoprosthesis of claim 38 wherein a wall thickness of said tube ranges from 0.0050 to 0.0075 inches.
Claim 46
Dependent Claim
18 words
The endoprosthesis of claim 38 wherein said first layer has a thickness ranging from 0.0005 to 0.0030 inches.
References Cited (Backward Citations)
US3278176A
Cited
US3868956A
Cited
US3842441A
Cited
US4023557A
Cited
US4641653A
Cited
US4501264A
Cited
US4214587A
Cited
US4763653A
Cited
US4733665A
Cited
US4776337A
Cited
US4733665C2
Cited
US4776337B1
Cited
US4733665B1
Cited
US5102417A
Cited
US4768507A
Cited
US4878906A
Cited
US4848343A
Cited
US4800882A
Cited
US5314444A
Cited
US4813925A
Cited
US4795458A
Cited
US5133732A
Cited
US5266073A
Cited
US4830003A
Cited
US5019090A
Cited
US5195984A
Cited
US5001825A
Cited
US4856516A
Cited
US4994033A
Cited
EP0421729B1
Cited
US5234456A
Cited
US5221261A
Cited
US5378239A
Cited
US5071407A
Cited
US5064435A
Cited
US5344425A
Cited
US5330500A
Cited
US5135536A
Cited
WO1992013483A1
Cited
US5314472A
Cited
US5234457A
Cited
EP0547739A1
Cited
US5342300A
Cited
US5282823A
Cited
EP0565251A1
Cited
WO1993019803A1
Cited
US5201757A
Cited
WO1994016646A1
Cited
WO1994016629A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-30 | 2001-09-29 | 2002-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-30 | 2005-09-29 | 2006-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-30 | 2009-09-29 | 2010-03-31 | $7700.00 | Window Closed / Lapsed |